Heat exchange plate



FIG. 1 shows a perspective view of a Design of a heat exchange plate.

FIG. 2 shows a front view of the Design.

FIG. 3 shows a rear view of the Design.

FIG. 4 shows a right side view of the Design.

FIG. 5 shows a left side view of the Design.

FIG. 6 shows a top view of the Design; and,

FIG. 7 shows a bottom view of the Design.

The broken lines shown in the drawings represent unclaimed portions of the heat exchange plate and form no part of the claimed design. 

The ornamental design for a heat exchange plate, substantially as shown and described. 